@book { ZurlebensweltlichenAnalysedesWindsurfingseinequalitativeUntersuchung,
    title = "Zur lebensweltlichen Analyse des Windsurfings - eine qualitative Untersuchung",
    author = "Mathias {Brandau}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/225482"
}